Spark Plug Champion D23 - Crown

The Champion D23 Spark Plug is a heavy-duty industrial spark plug, often used in older engines, agricultural machinery, and industrial equipment. It is also cross-referenced with the Stitt 86 plug, indicating compatibility in similar applications.

🔧 Specifications:

• Thread Diameter: 18mm
• Thread Reach: 12.7mm (0.5 inch)
• Seat Type: Flat
• Hex Size: 23.8mm (15/16 inch)
• Tip Configuration: Non-projected
• Construction: Standard
• Terminal Type: Removable
• Part Number: Champion D23 / 523 
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🔁 Cross Reference Equivalents:

• Stitt: 86
• NGK: AB-6, 2910
• Denso: L14-U, 5000, 5001
• Autolite: 378, 388, B11
• Bosch: M10AC, M12B
• ACDelco: C88, C88L
• Motorcraft: BT10, BT8